Trailer hitch locking device



FIG. 1 is a perspective view of a trailer hitch locking device showing my new design;

FIG. 2 is a side elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a side elevation view thereof opposite to that shown in FIG. 2;

FIG. 8 is a side elevation view thereof similar to that of FIG. 2 but with additional locking elements including a locking bar, spring cotter pin and a padlock all of which are depicted in broken lines for illustrative purposes only and form no part of the design claimed;

FIG. 9 is a front elevation view of FIG. 8. 

The ornamental design for a trailer hitch locking device, as shown and described. 